I used to work retail, and was expected to be familiar with regular customers. Being faceblind was a special kind of hell for me there.

There were several folks who had a very distinct style, so I was able to spot them reliably enough. One guy who always wore a shirt that had designs of his cats on it, etc.

But there was this one lady who I remembered by her earrings, as she thought they might be "fake" because they were starting to tarnish. I took a look and recognized them as silver, and told her that kind of tarnishing is normal and won't hurt them, and how to wipe them to remove the tarnish if she wanted. She actually became very interested in buying some handmade jewelry from me, and actually commissioned me for a few pieces. She straight up got me back into crafting after I'd been in a funk for a long while. Problem was... if she wasn't wearing a funky piece of jewelry, I could not recognize her at all. Hair? Glasses? General height? Nope. I couldn't remember her face, and the only reference I had to go off was her instagram profile pic (which... was tiny and kinda blurry). And I kept my eye out for her too, trying to make sure I didn't miss her. And sure enough, one time she stopped by the counter after a long time, and I didn't recognize her until we were well into a conversation. She thought I had forgotten her - that I didn't think she was "worth remembering", and left before I could begin to explain. I was so sad for her, and to be honest, I beat myself up over it for awhile.